In the subsequent months I have mentioned this to various rabbonim - who have all expressed shock that this is officially sanctioned. No one knew any teshuvos written on the subject which justify this approach. However I have found that this is not simply a quirk with one kiruv organization - it represents a major conflict between different kiruv organizations. The big money seems to be going in the direction of kiruv for non-Jews (with some kind of Jewish identity) with the hope of converting them. A friend of mine told me that on three separate occasions he was sent guests for Shabbos from a Russian kiruv program here in Jerusalem and found out that they were all non-Jews. When he complained, the program simply stopped sending him guests.
Similarly there has been a major effort to actively pursue intermarried couples and using various techniques - representive of the best American marketing techniques - convince the non-Jewish spouse to convert. This latter approach is spearheaded by R' Leib Tropper of Yeshiva Kol Yaakov in Monsey. See his website [Eternal Jewish Family - Convert to Judaism, Jewish Conversion, Universally Accepted Halachic Conversions for Intermarried Couples
I mentioned this information to Rav Moshe Sternbuch who found my revelations disturbing and he wrote a letter which he asked me to translate and distribute. He personally read and approved the translation. The original letter and its translation can be found at the following links.
Some of the discussion aroused already can be found at the following link
Igros Moshe Y.D. IV. #41 page 271
this education to convert as they need to do - as I have written to
your brother R’ Mordechai Tendler. One should not be concerned by
the fact that we are teaching Torah to people whose status as Jews
is in doubt. Since it is actually possible that they are Jews and
since there is a reason for this education - it would appear there
is no prohibition to teach them Torah. But you should not teach them
false halachos - an act which itself is prohibited. In other words,
don’t tell them that we in fact view them as definitely Jewish.
Instead tell them that while in fact there is a doubt about their
status as Jews nevertheless we are prepared to educate them in G‑d’s
converted they are not to be considered as definitely Jewish even in
to the Torah. They are not to be shamed or embarrassed but on the
other hand they should not be deceived with false flattery. On the
other hand l’chumra they are required to keep all the mitzvos
because maybe they are in fact genuine Jews.